Features: 1. It can be used as a Bluetooth audio transmitter to transmit your TV audio (TV is required a 3.5mm output port or L/R output ports) to your Bluetooth headset or Bluetooth headphones to avoid disturbing others at night. 2. It can be used as a Bluetooth audio receiver to turn your old speaker without Bluetooth into a wireless Bluetooth speaker, for some old cars, you can transmit your phone music through this item to the car's AUX audio system, then your old car comes with wireless Bluetooth function. 3. It can be used as USB and TF card (also called Micro SD Card) player, insert USB flash disk or TF card, the music will be transmitted to your wired/wireless headphones, wired/wireless speakers or car AUX stereo system. Supports mp3/wav/wam/ape/flac audio formats. Note: ...